Trained Network Force Measurement System for Aircraft/Store Interfaces

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-09-C-0340
Agency Tracking Number: N09A-003-0285
Amount: $69,750.00
Phase: Phase I
Program: STTR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: N09-T003
Solicitation Number: 2009.A
Small Business Information
11995 El Camino Real, Suite 200, San Diego, CA, 92130
DUNS: 133709001
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Kevin Napolitano
 Senior Technical Advisor, Test
 (858) 480-2030
 kevin.napolitano@ata-e.com
Business Contact
 Howard Matt
Title: Project Engineer
Phone: (858) 480-2102
Email: howard.matt@ata-e.com
Research Institution
 University of California, San Diego
 Michael Todd
 Jacobs School of Engineering
9500 Gilman Drive, MC0085
La Jolla, CA, 92093
 (858) 534-5951
 Nonprofit college or university
Abstract
This proposal addresses the development of a new methodology to predict reaction forces in weapon store connections of naval aircraft. The proposed methodology utilizes a strain gage-based measurement technique in which a series of sensors are calibrated with a set of known loading configurations. The sensitivity matrix relating the measured strains to the loads forms the core of a system that can be thought of as a neural network. The efficacy of this network will improve as more strain gages are added and more calibration load cases are applied. System identification and singular value decomposition procedures will be used in the training of the network. In addition, optimization routines will be adopted for strain gage placement in order to improve the strain-to-load mapping. The feasibility of the proposed technique on a simple but representative test specimen will be demonstrated. It is anticipated that system nonlinearities will pose challenges to the proposed methodology; hence the test specimen will be designed to incorporate this effect to provide realistic performance estimates. Included in the final report for Phase I will be a description of a streamlined version - hardware and software - of the Phase II interface-load measurement system.

* Information listed above is at the time of submission. *

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